1 -- Nageru theme for TFK mini-tournament 2017, based on the default theme.
3 local futatabi_server = "http://gruessi.trd.sesse.net:9096"
6 transition_start = -2.0,
9 transition_src_signal = 0,
10 transition_dst_signal = 0,
13 {0.5, 0.5, 0.5}, -- Input 0.
14 {0.5, 0.5, 0.5}, -- Input 1.
15 {0.5, 0.5, 0.5}, -- Input 2.
16 {0.5, 0.5, 0.5}, -- Input 3.
17 {0.5, 0.5, 0.5}, -- Input 4.
18 {0.5, 0.5, 0.5} -- Input 5.
19 -- Will also be filled with VIDEO_SIGNAL_NUM below.
22 overlay_transition_start = -2.0,
23 overlay_transition_end = -1.0,
24 overlay_alpha_src = 0.0,
25 overlay_alpha_dst = 1.0,
26 overlay_enabled = false,
28 stinger_in_progress = false,
30 stinger_src_signal = 0,
31 stinger_dst_signal = 0,
32 stinger_save_overlay = false,
35 preview_signal_num = 1
37 local NUM_CAMERAS = 6 -- Remember to update neutral_colors, too.
39 -- Valid values for live_signal_num and preview_signal_num.
40 local INPUT0_SIGNAL_NUM = 0
41 local INPUT1_SIGNAL_NUM = 1
42 local INPUT2_SIGNAL_NUM = 2
43 local INPUT3_SIGNAL_NUM = 3
44 local INPUT4_SIGNAL_NUM = 4
45 local INPUT5_SIGNAL_NUM = 5
46 local SBS_SIGNAL_NUM = NUM_CAMERAS
47 local STATIC_SIGNAL_NUM = NUM_CAMERAS + 1
48 local VIDEO_SIGNAL_NUM = NUM_CAMERAS + 2
50 state.neutral_colors[VIDEO_SIGNAL_NUM - INPUT0_SIGNAL_NUM + 1] = {0.5, 0.5, 0.5}
52 -- Preview-only signal showing the current signal with the overlay.
53 -- Not valid for live_signal_num!
54 local OVERLAY_SIGNAL_NUM = NUM_CAMERAS + 3
56 -- Valid values for transition_type. (Cuts are done directly, so they need no entry.)
57 local NO_TRANSITION = 0
58 local ZOOM_TRANSITION = 1
59 local FADE_TRANSITION = 2
61 -- Last width/height/frame rate for each channel, if we have it.
62 -- Note that unlike the values we get from Nageru, the resolution is per
63 -- frame and not per field, since we deinterlace.
64 local last_resolution = {}
66 local cef_path = Nageru.THEME_PATH:match("(.*)/nageru/")
67 local cef_input = HTMLInput.new("file://" .. cef_path .. "/score.html")
68 cef_input:execute_javascript_async("play()")
70 local bg_video = VideoInput.new(cef_path .. "/flow-720.mp4", Nageru.VIDEO_FORMAT_YCBCR)
71 -- local iptv_video = VideoInput.new("http://10.34.129.69:9060/1/v.flv", Nageru.VIDEO_FORMAT_YCBCR)
72 local iptv_video = VideoInput.new(futatabi_server, Nageru.VIDEO_FORMAT_YCBCR)
74 local static_image = ImageInput.new(cef_path .. "/nageru/dsn-bg.png")
78 cef_input:execute_javascript_async("play()")
81 function disconnect_iptv()
82 iptv_video:disconnect()
85 -- An overlay with variable alpha.
86 function make_overlay(scene, base)
87 local image = scene:add_input(cef_input)
88 local multiply_effect = scene:add_effect(MultiplyEffect.new())
89 local overlay_effect = scene:add_optional_effect(OverlayEffect.new(), base, multiply_effect)
92 multiply_effect = multiply_effect,
93 overlay_effect = overlay_effect
97 function make_fade_input(scene)
99 input = scene:add_input(),
100 resample_effect = scene:add_optional_effect(ResampleEffect.new()), -- Activated if scaling.
101 wb_effect = scene:add_optional_effect(WhiteBalanceEffect.new()) -- Activated for video inputs.
103 ret.overlay = make_overlay(scene, ret.wb_effect)
107 -- A scene to fade between two inputs, of which either can be a picture
109 function make_fade_scene()
110 local scene = Scene.new(16, 9)
112 -- If fading between two live inputs, the overlay is put on top.
113 -- If fading between the static picture and a live input,
114 -- the overlay is put on the live input.
115 local input0 = make_fade_input(scene)
116 local input1 = make_fade_input(scene)
117 local mix_effect = scene:add_effect(MixEffect.new(), input0.overlay.overlay_effect, input1.overlay.overlay_effect)
118 local overlay = make_overlay(scene, mix_effect)
120 -- At most one overlay can be active at any given time.
121 input0.overlay.overlay_effect:promise_to_disable_if_enabled(input1.overlay.overlay_effect)
122 input0.overlay.overlay_effect:promise_to_disable_if_enabled(overlay.overlay_effect)
123 input1.overlay.overlay_effect:promise_to_disable_if_enabled(input0.overlay.overlay_effect)
124 input1.overlay.overlay_effect:promise_to_disable_if_enabled(overlay.overlay_effect)
125 overlay.overlay_effect:promise_to_disable_if_enabled(input0.overlay.overlay_effect)
126 overlay.overlay_effect:promise_to_disable_if_enabled(input1.overlay.overlay_effect)
128 scene:finalize(true) -- Only used live, don't bother creating LQ versions.
134 mix_effect = mix_effect,
138 fade_scene = make_fade_scene()
140 function make_sbs_input(scene, has_overlay)
141 local input = scene:add_input()
144 overlay = has_overlay and make_overlay(scene, input) or nil,
145 resample_effect = scene:add_effect({ResampleEffect.new(), ResizeEffect.new()}),
146 wb_effect = scene:add_effect(WhiteBalanceEffect.new()),
147 padding_effect = scene:add_effect(IntegralPaddingEffect.new())
151 -- Side-by-side scene.
152 function make_sbs_scene()
153 local scene = Scene.new(16, 9)
155 local bg = scene:add_input(bg_video)
156 local input0 = make_sbs_input(scene, true)
157 local input1 = make_sbs_input(scene, false)
159 input0.padding_effect:set_vec4("border_color", 0.0, 0.0, 0.0, 0.0)
160 input1.padding_effect:set_vec4("border_color", 0.0, 0.0, 0.0, 0.0)
162 input0.input:display(0)
163 input1.input:display(1)
165 local i0 = scene:add_effect(OverlayEffect.new(), bg, input0.padding_effect)
166 scene:add_effect(OverlayEffect.new(), i0, input1.padding_effect)
173 overlay = input0.overlay -- May be nil.
176 local sbs_scene = make_sbs_scene()
178 function make_simple_scene_no_finalize()
179 local scene = Scene.new(16, 9)
181 local input = scene:add_input()
182 local resample_effect = scene:add_effect({ResampleEffect.new(), ResizeEffect.new(), IdentityEffect.new()})
183 local wb_effect = scene:add_effect(WhiteBalanceEffect.new())
184 local overlay = make_overlay(scene, wb_effect)
189 wb_effect = wb_effect,
190 resample_effect = resample_effect,
195 -- A scene to show a single input on screen.
196 function make_simple_scene()
197 local scene = make_simple_scene_no_finalize()
198 scene.scene:finalize()
202 local simple_scene = make_simple_scene()
204 -- Load all the stinger frames.
205 local stinger_images = {}
207 local filename = cef_path .. "/stinger/blur" .. string.rep("0", 3 - string.len(tostring(idx))) .. idx .. ".png"
208 stinger_images[idx] = ImageInput.new(filename)
211 -- A scene to show a single input on screen, with a stinger on top.
212 function make_stinger_scene()
213 local scene = make_simple_scene_no_finalize()
214 scene.stinger_input = scene.scene:add_input()
215 scene.scene:add_effect(OverlayEffect.new(), scene.overlay.overlay_effect, scene.stinger_input)
216 scene.scene:finalize()
219 local stinger_scene = make_stinger_scene()
221 -- A scene to show a single static picture on screen. Never with HTML overlay.
222 local static_scene = Scene.new(16, 9)
223 static_scene:add_input(static_image)
224 static_scene:finalize()
226 -- A scene to show the overlay and nothing more. LQ only,
227 -- since it is not a valid live signal.
228 local overlay_scene_lq = Scene.new(16, 9)
229 local overlay_scene_lq_input = overlay_scene_lq:add_input(cef_input)
230 overlay_scene_lq:finalize(false)
232 function needs_scale(signals, signal_num, width, height)
233 if signal_num == STATIC_SIGNAL_NUM then
234 -- We assume this is already correctly scaled at load time.
237 assert(is_plain_signal(signal_num))
238 return (signals:get_width(signal_num) ~= width or signals:get_height(signal_num) ~= height)
241 function set_scale_parameters_if_needed(scene, signals, signal_num, width, height, hq)
242 if needs_scale(signals, signal_num, width, height) then
244 scene.resample_effect:choose(ResampleEffect) -- High-quality resampling.
246 scene.resample_effect:choose(ResizeEffect) -- Low-quality resampling.
248 scene.resample_effect:set_int("width", width)
249 scene.resample_effect:set_int("height", height)
251 scene.resample_effect:disable()
257 -- Returns the number of outputs in addition to the live (0) and preview (1).
258 -- Called only once, at the start of the program.
259 function num_channels()
260 return NUM_CAMERAS + 4 -- sbs, static picture, video and overlay
263 function is_plain_signal(num)
264 return (num >= INPUT0_SIGNAL_NUM and num <= INPUT5_SIGNAL_NUM) or (num == VIDEO_SIGNAL_NUM)
267 -- Helper function to write e.g. “720p60”. The difference between this
268 -- and get_channel_resolution_raw() is that this one also can say that
269 -- there's no signal.
270 function get_channel_resolution(signal_num)
271 local res = last_resolution[signal_num]
272 if (not res) or not res.is_connected then
273 return "disconnected"
275 if res.height <= 0 then
278 if not res.has_signal then
279 if res.height == 525 then
280 -- Special mode for the USB3 cards.
283 return get_channel_resolution_raw(res) .. ", no signal"
285 return get_channel_resolution_raw(res)
289 -- Helper function to write e.g. “60” or “59.94”.
290 function get_frame_rate(res)
291 local nom = res.frame_rate_nom
292 local den = res.frame_rate_den
293 if nom % den == 0 then
296 return string.format("%.2f", nom / den)
300 -- Helper function to write e.g. “720p60”.
301 function get_channel_resolution_raw(res)
302 if res.interlaced then
303 return res.height .. "i" .. get_frame_rate(res)
305 return res.height .. "p" .. get_frame_rate(res)
309 function get_futatabi_status(str)
312 for word in string.gmatch(str, '([^;]+)') do
313 table.insert(fields, word)
314 num_fields = num_fields + 1
316 if num_fields >= 4 then
324 -- Returns the name for each additional channel (starting from 2).
325 -- Called at the start of the program, and then each frame for live
326 -- channels in case they change resolution.
327 function channel_name(channel)
328 local signal_num = channel - 2
329 if signal_num == INPUT0_SIGNAL_NUM then
330 return "Main (" .. get_channel_resolution(signal_num) .. ")"
331 elseif signal_num == INPUT1_SIGNAL_NUM then
332 return "Secondary (" .. get_channel_resolution(signal_num) .. ")"
333 elseif signal_num == INPUT2_SIGNAL_NUM then
334 return "Goal L (" .. get_channel_resolution(signal_num) .. ")"
335 elseif signal_num == INPUT3_SIGNAL_NUM then
336 return "Goal R (" .. get_channel_resolution(signal_num) .. ")"
337 elseif signal_num == INPUT4_SIGNAL_NUM then
338 return "Commentators (" .. get_channel_resolution(signal_num) .. ")"
339 elseif signal_num == INPUT5_SIGNAL_NUM then
340 return "Laptop (" .. get_channel_resolution(signal_num) .. ")"
341 elseif signal_num == SBS_SIGNAL_NUM then
342 return "Side-by-side"
343 elseif signal_num == STATIC_SIGNAL_NUM then
344 return "Static picture"
345 elseif signal_num == VIDEO_SIGNAL_NUM then
346 local res = last_resolution[iptv_video:get_signal_num()]
347 if (not res) or res.last_subtitle == nil then
350 return "IPTV (" .. get_futatabi_status(res.last_subtitle) .. ")"
352 elseif signal_num == OVERLAY_SIGNAL_NUM then
358 -- Returns, given a channel number, which signal it corresponds to (starting from 0).
359 -- Should return -1 if the channel does not correspond to a simple signal.
360 -- (The information is used for whether right-click on the channel should bring up
361 -- an input selector or not.)
362 -- Called once for each channel, at the start of the program.
363 -- Will never be called for live (0) or preview (1).
364 function channel_signal(channel)
365 if channel - 2 == VIDEO_SIGNAL_NUM then
366 return iptv_video:get_signal_num()
367 elseif is_plain_signal(channel - 2) then
375 -- Called every frame. Returns the color (if any) to paint around the given
376 -- channel. Returns a CSS color (typically to mark live and preview signals);
377 -- "transparent" is allowed.
378 -- Will never be called for live (0) or preview (1).
379 function channel_color(channel)
380 if state.transition_type ~= NO_TRANSITION then
381 if channel_involved_in(channel, state.transition_src_signal) or
382 channel_involved_in(channel, state.transition_dst_signal) then
386 if channel_involved_in(channel, state.live_signal_num) then
390 if channel_involved_in(channel, state.preview_signal_num) then
396 function channel_involved_in(channel, signal_num)
397 if is_plain_signal(signal_num) then
398 return channel == (signal_num + 2)
400 if signal_num == SBS_SIGNAL_NUM then
401 return is_sbs_participating_signal(channel - 2)
403 if signal_num == STATIC_SIGNAL_NUM then
404 return (channel == NUM_CAMERAS)
406 if signal_num == VIDEO_SIGNAL_NUM then
407 return (channel == NUM_CAMERAS + 1)
413 -- Returns if a given channel supports setting white balance (starting from 2).
414 -- Called only once for each channel, at the start of the program.
415 function supports_set_wb(channel)
416 return is_plain_signal(channel - 2)
420 -- Gets called with a new gray point when the white balance is changing.
421 -- The color is in linear light (not sRGB gamma).
422 function set_wb(channel, red, green, blue)
423 if is_plain_signal(channel - 2) then
424 state.neutral_colors[channel - 2 + 1] = { red, green, blue }
428 function finish_transitions(t)
429 if state.transition_type ~= NO_TRANSITION and t >= state.transition_end then
430 state.live_signal_num = state.transition_dst_signal
431 state.transition_type = NO_TRANSITION
434 -- Disable the overlay if it is no longer visible.
435 if state.overlay_enabled and t > state.overlay_transition_end and state.overlay_alpha_dst == 0.0 then
436 state.overlay_enabled = false
437 print("Turning off overlay")
441 function in_transition(t)
442 return t >= state.transition_start and t <= state.transition_end
445 function is_sbs_participating_signal(signal_num)
446 return signal_num == INPUT0_SIGNAL_NUM or signal_num == INPUT4_SIGNAL_NUM
449 function simple_signal_has_overlay(signal_num)
450 -- The commentator output has no overlay on it.
451 return signal_num ~= INPUT4_SIGNAL_NUM
455 -- Called every frame.
456 function get_transitions(t)
457 if state.preview_signal_num == OVERLAY_SIGNAL_NUM then
458 if t < state.overlay_transition_end then
462 if state.overlay_enabled then
463 return {"Overlay off", "", "Fade ovl out"}
465 return {"Overlay on", "", "Fade ovl in"}
469 if in_transition(t) then
470 -- Transition already in progress, the only thing we can do is really
471 -- cut to the preview. (TODO: Make an “abort” and/or “finish”, too?)
475 if state.live_signal_num == state.preview_signal_num then
476 -- No transitions possible.
480 if (is_plain_signal(state.live_signal_num) and state.preview_signal_num == VIDEO_SIGNAL_NUM) or
481 (is_plain_signal(state.preview_signal_num) and state.live_signal_num == VIDEO_SIGNAL_NUM) then
482 return {"Cut", "Sting", "Fade"}
485 if (is_plain_signal(state.live_signal_num) or state.live_signal_num == STATIC_SIGNAL_NUM) and
486 (is_plain_signal(state.preview_signal_num) or state.preview_signal_num == STATIC_SIGNAL_NUM) then
487 return {"Cut", "", "Fade"}
491 if state.live_signal_num == SBS_SIGNAL_NUM and is_sbs_participating_signal(state.preview_signal_num) then
492 return {"Cut", "Zoom in"}
493 elseif is_sbs_participating_signal(state.live_signal_num) and state.preview_signal_num == SBS_SIGNAL_NUM then
494 return {"Cut", "Zoom out"}
500 function swap_preview_live()
501 local temp = state.live_signal_num
502 state.live_signal_num = state.preview_signal_num
503 state.preview_signal_num = temp
506 function start_transition(type_, t, duration)
507 state.transition_start = t
508 state.transition_end = t + duration
509 state.transition_type = type_
510 state.transition_src_signal = state.live_signal_num
511 state.transition_dst_signal = state.preview_signal_num
512 state.stinger_in_progress = false
517 -- Called when the user clicks a transition button.
518 function transition_clicked(num, t)
519 if state.preview_signal_num == OVERLAY_SIGNAL_NUM then
522 state.overlay_transition_start = -2.0
523 state.overlay_transition_end = -1.0
524 if state.overlay_enabled then
525 state.overlay_enabled = false
526 state.overlay_alpha_src = 0.0
527 state.overlay_alpha_dst = 0.0
529 state.overlay_enabled = true
530 state.overlay_alpha_src = 1.0
531 state.overlay_alpha_dst = 1.0
535 state.overlay_transition_start = t
536 state.overlay_transition_end = t + 1.0
537 if state.overlay_enabled then
538 state.overlay_alpha_src = 1.0
539 state.overlay_alpha_dst = 0.0
541 state.overlay_alpha_src = 0.0
542 state.overlay_alpha_dst = 1.0
544 state.overlay_enabled = true
551 if in_transition(t) then
552 -- Ongoing transition; finish it immediately before the cut.
553 finish_transitions(state.transition_end)
557 state.stinger_in_progress = false
560 finish_transitions(t)
562 if state.live_signal_num == state.preview_signal_num then
567 if (is_plain_signal(state.live_signal_num) and state.preview_signal_num == VIDEO_SIGNAL_NUM) or
568 (is_plain_signal(state.preview_signal_num) and state.live_signal_num == VIDEO_SIGNAL_NUM) then
570 if stinger_in_progress then
574 state.stinger_in_progress = true
575 state.stinger_frame = 0
576 state.stinger_src_signal = state.live_signal_num
577 state.stinger_dst_signal = state.preview_signal_num
581 if is_plain_signal(state.live_signal_num) and is_plain_signal(state.preview_signal_num) then
582 -- We can't zoom between these. Just make a cut.
583 io.write("Cutting from " .. state.live_signal_num .. " to " .. state.live_signal_num .. "\n")
585 state.stinger_in_progress = false
589 if (state.live_signal_num == SBS_SIGNAL_NUM and is_sbs_participating_signal(state.preview_signal_num)) or
590 (state.preview_signal_num == SBS_SIGNAL_NUM and is_sbs_participating_signal(state.live_signal_num)) then
591 start_transition(ZOOM_TRANSITION, t, 1.0)
594 finish_transitions(t)
597 if (state.live_signal_num ~= state.preview_signal_num) and
598 (is_plain_signal(state.live_signal_num) or
599 state.live_signal_num == STATIC_SIGNAL_NUM) and
600 (is_plain_signal(state.preview_signal_num) or
601 state.preview_signal_num == STATIC_SIGNAL_NUM) then
602 start_transition(FADE_TRANSITION, t, 1.0)
604 -- Fades involving SBS are ignored (we have no scene for it).
610 function channel_clicked(num)
611 state.preview_signal_num = num
614 function setup_fade_input(state, input, signals, signal_num, width, height)
615 if signal_num == STATIC_SIGNAL_NUM then
616 input.input:display(static_image)
617 input.wb_effect:disable()
619 -- We assume this is already correctly scaled at load time.
620 input.resample_effect:disable()
622 input.input:display(signal_num)
623 input.wb_effect:enable()
624 set_neutral_color(input.wb_effect, state.neutral_colors[signal_num - INPUT0_SIGNAL_NUM + 1])
626 if (signals:get_width(signal_num) ~= width or signals:get_height(signal_num) ~= height) then
627 input.resample_effect:enable()
628 input.resample_effect:set_int("width", width)
629 input.resample_effect:set_int("height", height)
631 input.resample_effect:disable()
636 function get_fade_scene(state, signals, t, width, height, input_resolution)
637 local scene = fade_scene
638 setup_fade_input(state, scene.input0, signals, state.transition_src_signal, width, height)
639 setup_fade_input(state, scene.input1, signals, state.transition_dst_signal, width, height)
641 local tt = calc_fade_progress(t, state.transition_start, state.transition_end)
642 scene.mix_effect:set_float("strength_first", 1.0 - tt)
643 scene.mix_effect:set_float("strength_second", tt)
645 -- The commentator output has no overlay on it.
646 local extra_alpha_factor = 1.0
647 if not simple_signal_has_overlay(state.transition_src_signal) and
648 not simple_signal_has_overlay(state.transition_dst_signal) then
649 extra_alpha_factor = 0.0
650 elseif not simple_signal_has_overlay(state.transition_src_signal) then
651 extra_alpha_factor = tt
652 elseif not simple_signal_has_overlay(state.transition_dst_signal) then
653 extra_alpha_factor = 1.0 - tt
656 -- If fading between two live inputs, the overlay is put on top.
657 -- If fading between the static picture and a live input,
658 -- the overlay is put on the live input.
659 scene.input0.overlay.overlay_effect:disable()
660 scene.input1.overlay.overlay_effect:disable()
661 scene.overlay.overlay_effect:disable()
662 if state.overlay_enabled then
663 local input0_live = (state.transition_src_signal ~= STATIC_SIGNAL_NUM)
664 local input1_live = (state.transition_dst_signal ~= STATIC_SIGNAL_NUM)
665 if input0_live and not input1_live then
666 scene.input0.overlay.overlay_effect:enable()
667 prepare_overlay_live(state, scene.input0, t, extra_alpha_factor)
668 elseif input1_live and not input0_live then
669 scene.input1.overlay.overlay_effect:enable()
670 prepare_overlay_live(state, scene.input1, t, extra_alpha_factor)
672 scene.overlay.overlay_effect:enable()
673 prepare_overlay_live(state, scene, t, extra_alpha_factor)
679 function fetch_input_resolution(signals, signal_num)
681 width = signals:get_width(signal_num),
682 height = signals:get_height(signal_num),
683 interlaced = signals:get_interlaced(signal_num),
684 has_signal = signals:get_has_signal(signal_num),
685 is_connected = signals:get_is_connected(signal_num),
686 frame_rate_nom = signals:get_frame_rate_nom(signal_num),
687 frame_rate_den = signals:get_frame_rate_den(signal_num),
688 last_subtitle = signals:get_last_subtitle(signal_num)
691 if res.interlaced then
692 -- Convert height from frame height to field height.
693 -- (Needed for e.g. place_rectangle.)
694 res.height = res.height * 2
696 -- Show field rate instead of frame rate; really for cosmetics only
697 -- (and actually contrary to EBU recommendations, although in line
698 -- with typical user expectations).
699 res.frame_rate_nom = res.frame_rate_nom * 2
704 local last_rate = 0.0
707 -- Called every frame. Get the scene for displaying at input <num>,
708 -- where 0 is live, 1 is preview, 2 is the first channel to display
709 -- in the bottom bar, and so on up to num_channels()+1. t is the
710 -- current time in seconds. width and height are the dimensions of
711 -- the output, although you can ignore them if you don't need them
712 -- (they're useful if you want to e.g. know what to resample by).
714 -- <signals> is basically an exposed InputState, which you can use to
715 -- query for information about the signals at the point of the current
716 -- frame. In particular, you can call get_width() and get_height()
717 -- for any signal number, and use that to e.g. assist in scene selection.
719 -- You should return scene to use, after having set any parameters you
720 -- want to set (through set_int() etc.). The parameters will be snapshot
721 -- at return time and used during rendering.
722 function get_scene(num, t, width, height, signals)
723 local input_resolution = {}
724 for signal_num=0,(NUM_CAMERAS-1) do
725 input_resolution[signal_num] = fetch_input_resolution(signals, signal_num)
727 input_resolution[iptv_video:get_signal_num()] = fetch_input_resolution(signals, iptv_video:get_signal_num())
728 last_resolution = input_resolution
730 -- Save some CPU time if we're not having SBS on live.
732 if state.live_signal_num == SBS_SIGNAL_NUM or
733 state.preview_signal_num == SBS_SIGNAL_NUM or
734 state.transition_type == ZOOM_TRANSITION then
739 if new_rate ~= last_rate then
740 -- Avoid waking up the video thread (which may be sleeping) if the rate is the same.
741 bg_video:change_rate(new_rate)
745 if num == 0 then -- Live.
746 -- See if we're in a transition.
747 finish_transitions(t)
748 if state.transition_type == ZOOM_TRANSITION then
749 -- Transition in or out of SBS.
750 sbs_scene.input0.overlay.overlay_effect:enable_if(state.overlay_enabled)
751 prepare_sbs_scene(state, sbs_scene, calc_zoom_progress(t), state.transition_type, state.transition_src_signal, state.transition_dst_signal, width, height, input_resolution, true)
752 prepare_overlay_live(state, sbs_scene, t, 1.0)
753 return sbs_scene.scene
754 elseif state.transition_type == NO_TRANSITION and state.live_signal_num == SBS_SIGNAL_NUM then
756 sbs_scene.input0.overlay.overlay_effect:enable_if(state.overlay_enabled)
757 prepare_sbs_scene(state, sbs_scene, 0.0, NO_TRANSITION, 0, SBS_SIGNAL_NUM, width, height, input_resolution, true)
758 prepare_overlay_live(state, sbs_scene, t, 1.0)
759 return sbs_scene.scene
760 elseif state.transition_type == FADE_TRANSITION then
761 return get_fade_scene(state, signals, t, width, height, input_resolution)
762 elseif is_plain_signal(state.live_signal_num) then
763 local overlay_really_enabled = state.overlay_enabled and simple_signal_has_overlay(state.live_signal_num)
764 if state.stinger_in_progress then
765 stinger_scene.overlay.overlay_effect:enable_if(overlay_really_enabled)
766 stinger_scene.input:display(state.live_signal_num)
767 set_scale_parameters_if_needed(stinger_scene, signals, state.live_signal_num, width, height, true)
768 set_neutral_color_from_signal(state, stinger_scene.wb_effect, state.live_signal_num)
770 stinger_scene.stinger_input:display(stinger_images[state.stinger_frame])
771 state.stinger_frame = state.stinger_frame + 1
772 if state.stinger_frame >= 25 then
773 state.stinger_in_progress = false
774 state.preview_signal_num = state.stinger_src_signal
775 state.live_signal_num = state.stinger_dst_signal
777 if state.stinger_dst_signal == VIDEO_SIGNAL_NUM then
778 -- Turn off the overlay when playing video.
779 state.stinger_save_overlay = state.overlay_enabled
780 state.overlay_enabled = false
782 -- Restore the state.
783 state.overlay_enabled = state.stinger_save_overlay
787 if overlay_really_enabled then
788 prepare_overlay_live(state, stinger_scene, t, 1.0)
790 return stinger_scene.scene
792 simple_scene.overlay.overlay_effect:enable_if(overlay_really_enabled)
793 simple_scene.input:display(state.live_signal_num)
794 set_scale_parameters_if_needed(simple_scene, signals, state.live_signal_num, width, height, true)
795 set_neutral_color_from_signal(state, simple_scene.wb_effect, state.live_signal_num)
796 prepare_overlay_live(state, simple_scene, t, 1.0)
797 return simple_scene.scene
799 elseif state.live_signal_num == STATIC_SIGNAL_NUM then -- Static picture.
806 -- We do not show overlays on the individual preview inputs.
807 -- The M/E preview matches what we'd put live by doing a transition, as always.
808 local show_overlay = false
809 if num == 1 then -- Preview.
810 if state.preview_signal_num == OVERLAY_SIGNAL_NUM then
811 num = state.live_signal_num + 2
812 show_overlay = not state.overlay_enabled
814 if state.transition_type ~= NO_TRANSITION then
815 num = state.transition_dst_signal + 2
818 num = state.preview_signal_num + 2
819 show_overlay = state.overlay_enabled and simple_signal_has_overlay(state.preview_signal_num)
823 -- Individual preview inputs (usually without overlay).
824 if is_plain_signal(num - 2) then
825 local signal_num = num - 2
826 simple_scene.overlay.overlay_effect:enable_if(show_overlay)
827 simple_scene.input:display(signal_num)
828 set_scale_parameters_if_needed(simple_scene, signals, signal_num, width, height, false)
829 set_neutral_color_from_signal(state, simple_scene.wb_effect, signal_num)
830 prepare_overlay_static(simple_scene, t)
831 return simple_scene.scene
833 if num == SBS_SIGNAL_NUM + 2 then
834 sbs_scene.input0.overlay.overlay_effect:enable_if(show_overlay)
835 prepare_sbs_scene(state, sbs_scene, 0.0, NO_TRANSITION, 0, SBS_SIGNAL_NUM, width, height, input_resolution, false)
836 return sbs_scene.scene
838 if num == STATIC_SIGNAL_NUM + 2 then
841 if num == OVERLAY_SIGNAL_NUM + 2 then
842 return overlay_scene_lq
846 -- This is broken, of course (even for positive numbers), but Lua doesn't give us access to real rounding.
848 return math.floor(x + 0.5)
851 function lerp(a, b, t)
852 return a + (b - a) * t
855 function lerp_pos(a, b, t)
857 x0 = lerp(a.x0, b.x0, t),
858 y0 = lerp(a.y0, b.y0, t),
859 x1 = lerp(a.x1, b.x1, t),
860 y1 = lerp(a.y1, b.y1, t)
864 function pos_from_top_left(x, y, width, height, screen_width, screen_height)
865 local xs = screen_width / 1280.0
866 local ys = screen_height / 720.0
870 x1 = round(xs * (x + width)),
871 y1 = round(ys * (y + height))
875 function prepare_sbs_scene(state, scene, t, transition_type, src_signal, dst_signal, screen_width, screen_height, input_resolution, hq)
876 scene.input0.input:display(0)
877 scene.input1.input:display(4)
878 set_neutral_color(scene.input0.wb_effect, state.neutral_colors[1])
879 set_neutral_color(scene.input1.wb_effect, state.neutral_colors[5])
881 -- Both inputs are the same size (true side-by-side).
882 local pos0 = pos_from_top_left(1280 - 616 - 16, 186, 616, 347, screen_width, screen_height)
883 local pos1 = pos_from_top_left(16, 186, 616, 347, screen_width, screen_height)
885 local pos_fs = { x0 = 0, y0 = 0, x1 = screen_width, y1 = screen_height }
887 if transition_type == NO_TRANSITION then
889 affine_param = { sx = 1.0, sy = 1.0, tx = 0.0, ty = 0.0 } -- Identity.
891 -- Zooming to/from SBS view into or out of a single view.
892 assert(transition_type == ZOOM_TRANSITION)
894 if src_signal == SBS_SIGNAL_NUM then
898 assert(dst_signal == SBS_SIGNAL_NUM)
903 if signal == INPUT0_SIGNAL_NUM then
904 affine_param = find_affine_param(pos0, lerp_pos(pos0, pos_fs, real_t))
905 elseif signal == INPUT4_SIGNAL_NUM then
906 affine_param = find_affine_param(pos1, lerp_pos(pos1, pos_fs, real_t))
910 -- NOTE: input_resolution is not 1-indexed, unlike usual Lua arrays.
911 place_rectangle_with_affine(scene.input0, pos0, affine_param, screen_width, screen_height, input_resolution[0].width, input_resolution[0].height, hq)
912 place_rectangle_with_affine(scene.input1, pos1, affine_param, screen_width, screen_height, input_resolution[1].width, input_resolution[1].height, hq)
915 -- Find the transformation that changes the first rectangle to the second one.
916 function find_affine_param(a, b)
917 local sx = (b.x1 - b.x0) / (a.x1 - a.x0)
918 local sy = (b.y1 - b.y0) / (a.y1 - a.y0)
922 tx = b.x0 - a.x0 * sx,
923 ty = b.y0 - a.y0 * sy
927 function place_rectangle_with_affine(input, pos, aff, screen_width, screen_height, input_width, input_height, hq)
928 local x0 = pos.x0 * aff.sx + aff.tx
929 local x1 = pos.x1 * aff.sx + aff.tx
930 local y0 = pos.y0 * aff.sy + aff.ty
931 local y1 = pos.y1 * aff.sy + aff.ty
933 place_rectangle(input, x0, y0, x1, y1, screen_width, screen_height, input_width, input_height, hq)
936 function place_rectangle(input, x0, y0, x1, y1, screen_width, screen_height, input_width, input_height, hq)
937 input.padding_effect:set_int("width", screen_width)
938 input.padding_effect:set_int("height", screen_height)
941 if x0 > screen_width or x1 < 0.0 or y0 > screen_height or y1 < 0.0 then
942 input.resample_effect:choose(ResizeEffect) -- Low-quality resizing.
943 input.resample_effect:set_int("width", 1)
944 input.resample_effect:set_int("height", 1)
945 input.padding_effect:set_int("left", screen_width + 100)
946 input.padding_effect:set_int("top", screen_height + 100)
957 srcx0 = -x0 / (x1 - x0)
961 srcy0 = -y0 / (y1 - y0)
964 if x1 > screen_width then
965 srcx1 = (screen_width - x0) / (x1 - x0)
968 if y1 > screen_height then
969 srcy1 = (screen_height - y0) / (y1 - y0)
974 -- High-quality resampling.
975 local resample_effect = input.resample_effect:choose(ResampleEffect)
977 local x_subpixel_offset = x0 - math.floor(x0)
978 local y_subpixel_offset = y0 - math.floor(y0)
980 -- Resampling must be to an integral number of pixels. Round up,
981 -- and then add an extra pixel so we have some leeway for the border.
982 local width = math.ceil(x1 - x0) + 1
983 local height = math.ceil(y1 - y0) + 1
984 input.resample_effect:set_int("width", width)
985 input.resample_effect:set_int("height", height)
987 -- Correct the discrepancy with zoom. (This will leave a small
988 -- excess edge of pixels and subpixels, which we'll correct for soon.)
989 local zoom_x = (x1 - x0) / (width * (srcx1 - srcx0))
990 local zoom_y = (y1 - y0) / (height * (srcy1 - srcy0))
991 resample_effect:set_float("zoom_x", zoom_x) -- Use the actual effect specialization; specific to ResampleEffect.
992 resample_effect:set_float("zoom_y", zoom_y)
993 resample_effect:set_float("zoom_center_x", 0.0)
994 resample_effect:set_float("zoom_center_y", 0.0)
996 -- Padding must also be to a whole-pixel offset.
997 input.padding_effect:set_int("left", math.floor(x0))
998 input.padding_effect:set_int("top", math.floor(y0))
1000 -- Correct _that_ discrepancy by subpixel offset in the resampling.
1001 resample_effect:set_float("left", srcx0 * input_width - x_subpixel_offset / zoom_x)
1002 resample_effect:set_float("top", srcy0 * input_height - y_subpixel_offset / zoom_y)
1004 -- Finally, adjust the border so it is exactly where we want it.
1005 input.padding_effect:set_float("border_offset_left", x_subpixel_offset)
1006 input.padding_effect:set_float("border_offset_right", x1 - (math.floor(x0) + width))
1007 input.padding_effect:set_float("border_offset_top", y_subpixel_offset)
1008 input.padding_effect:set_float("border_offset_bottom", y1 - (math.floor(y0) + height))
1010 -- Lower-quality simple resizing.
1011 input.resample_effect:choose(ResizeEffect)
1013 local width = round(x1 - x0)
1014 local height = round(y1 - y0)
1015 input.resample_effect:set_int("width", width)
1016 input.resample_effect:set_int("height", height)
1018 -- Padding must also be to a whole-pixel offset.
1019 input.padding_effect:set_int("left", math.floor(x0))
1020 input.padding_effect:set_int("top", math.floor(y0))
1022 -- No subpixel stuff.
1023 input.padding_effect:set_float("border_offset_left", 0.0)
1024 input.padding_effect:set_float("border_offset_right", 0.0)
1025 input.padding_effect:set_float("border_offset_top", 0.0)
1026 input.padding_effect:set_float("border_offset_bottom", 0.0)
1030 function prepare_overlay_live(state, scene, t, extra_alpha_factor)
1031 if scene.overlay then
1032 local tt = calc_fade_progress(t, state.overlay_transition_start, state.overlay_transition_end)
1033 local overlay_alpha = state.overlay_alpha_src + tt * (state.overlay_alpha_dst - state.overlay_alpha_src)
1034 overlay_alpha = overlay_alpha * extra_alpha_factor
1035 --print("overlay_alpha=" .. overlay_alpha .. " [" .. state.overlay_alpha_src .. "," .. state.overlay_alpha_dst .. "]@" .. tt)
1036 if t > state.overlay_transition_end and state.overlay_alpha_dst == 0.0 then
1037 state.overlay_enabled = false -- Takes effect next frame.
1038 -- print("Turning off overlay")
1040 scene.overlay.multiply_effect:set_vec4("factor", overlay_alpha, overlay_alpha, overlay_alpha, overlay_alpha)
1044 function prepare_overlay_static(scene)
1045 if scene.overlay then
1046 scene.overlay.multiply_effect:set_vec4("factor", 1.0, 1.0, 1.0, 1.0)
1050 function set_neutral_color(effect, color)
1051 effect:set_vec3("neutral_color", color[1], color[2], color[3])
1054 function set_neutral_color_from_signal(state, effect, signal)
1055 if is_plain_signal(signal) then
1056 set_neutral_color(effect, state.neutral_colors[signal - INPUT0_SIGNAL_NUM + 1])
1060 function calc_zoom_progress(t)
1061 if t < state.transition_start then
1063 elseif t > state.transition_end then
1066 local tt = (t - state.transition_start) / (state.transition_end - state.transition_start)
1068 return math.sin(tt * 3.14159265358 * 0.5)
1072 function calc_fade_progress(t, transition_start, transition_end)
1073 local tt = (t - transition_start) / (transition_end - transition_start)
1076 elseif tt > 1.0 then
1080 -- Make the fade look maybe a tad more natural, by pumping it
1081 -- through a sigmoid function.
1082 tt = 10.0 * tt - 5.0
1083 tt = 1.0 / (1.0 + math.exp(-tt))
1089 { "Reload overlay", reload_cef },
1090 { "Disconnect IPTV", disconnect_iptv }